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A person may demonstrate observable effects on the central nervous system when exposed to carbon monoxide at a concentration of 50 ppm, may lose consciousness at a concentration of 250 ppm, and may die at a concentration of 750 ppm. A "typical" urban environment produces carbon monoxide at a rate of 1.2 L/m2-hr. If a temperature inversion forms over the city at a height of 0.70 km, how long will it take the carbon monoxide concentration to reach 50 ppm if the wind velocity is zero? If the wind velocity is 1 m/s, what steady-state concentration of CO will be observed? Assume that the city is approximately square, 20 km on each side.
A truck is designed to measure concrete roughness. During a typical test the driver will bring the vehicle to a constant test velocity, v, and then suddenly lock the brakes bringing the vehicle to a complete stop.
The evaporation rate from the surface of a 3650-acre lake is 100 acre-ft/day. Estimate the depth change in the lake in feet during a 1-year period if the net inflow to the lake is 25 cfs. Is the depth increasing or decreasing? What is the change in c..
The floating platform is supported at each corner by a hollow sealed cylinder 1 m in diameter. The platform itself weights 30kN is air, and each cylinder weighs 1.0kN/meter of length. What total cylinder length L
Car B is driving straight toward the point O at a constant speed v. An observer, located at A, tracts the car with a radar gun. What is the speed |r(dot)B/A| that the observer at A records
Assume a saturated hydraulic conductivity of 0.8 in./hr, a porosity of 0.62, an initial moisture content of 0.28, and an average capillary suction of 7.2 in. The depression storage is 0.5 in.
Calculate the maximum shear stress developed in a hollow circular shaft with the following dimensions:
The tape is stretched over three equal spans. Calculate the tape corrections under the following conditions at field, temperature = 85ºF, pull = 18kg, E= 2.109 x 10 6 kg/cm 2
A cutting 9 m deep is to be excavated in saturated clay of unit weight 19 kN/m3. The design shear strength parameters are cu = 30 kN/ m2 and ?u = 0. A hard stratum underlies the clay at a depth of 11 m below ground level.
Use dimensional analysis with the following parameters: height of spillway (P), head on the spillway (H), viscosity of liquid, density of liquid, surface tension, and acceleration due to gravity.
At A, the pipe diameter is 24 in and the pressure is 45 psi. At B, the pipe diameter is 12 in and the pressure is 50 psi. Point B is 3 f t lower than A. Find the flow rate if the pump puts 22 hp (16 kW) in to the flow. Neglect head losses.
A pipeline 1200 ft long and 8 in. in diameter has at its inlet point 75ft of available hydraulic energy with respect to the reference level. The velocity in the pipe is 5 fps: the pressure at its end is 12psi.
Write an essay on the topic "application of geophysical techniques using electromagnetic induction as a tool for sustainable soil and water management of agricultural fields in the humid tropic Caribbean. components:
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